Via Katy Derbyshire in love German books, a sad tale of how an Israeli translator of Harry Potter didn't even get a ticket to the press screening of the film, let alone recognition of the translation, which was used in the subtitles. The whole sad story is told by Gili Bar-Hillel, who writes a blog usually in Hebrew, but in this case an English post:

Though I was not employed by Warner Bros. and not contractually obligated towards them, such was the power of this company that they were able to threaten me by proxy. As far as I was able to figure out, Warner Bros. bullied the Christopher Little Agency into bullying the various international publishers to bully their translators into retroactively waiving all rights to their translations, under the threat that otherwise the publishers would not be sold translation rights to future books in the series. This is how it happened to me: I was invited to a chat with the Israeli publisher after I had already translated the first three books in a series. He met me in a café and required me to sign a memo, which I was not allowed to read in advance or show to anyone else, and of which I was not allowed to retain a copy ...